Finding the Third Proportional to 28,197,709,888.50 and 42,659,819,518.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,197,709,888.50 : 42,659,819,518.50 = 42,659,819,518.50 : x
2. Step 2: Convert to fraction form
   28,197,709,888.50/42,659,819,518.50 = 42,659,819,518.50/x
3. Step 3: Cross multiply
   28,197,709,888.50x = 42,659,819,518.50 × 42,659,819,518.50
4. Step 4: Simplify right side
   28,197,709,888.50x = 1,819,860,201,350,993,543,168
5. Step 5: Solve for x
   x = 1,819,860,201,350,993,543,168/28,197,709,888.50
6. Step 6: Final answer
   x = 64,539,290,905.08