Finding the Third Proportional to 30,621.80 and 64,050.43

Step by Step Solution

1. Step 1: Write the proportion equation
   30,621.80 : 64,050.43 = 64,050.43 : x
2. Step 2: Convert to fraction form
   30,621.80/64,050.43 = 64,050.43/x
3. Step 3: Cross multiply
   30,621.80x = 64,050.43 × 64,050.43
4. Step 4: Simplify right side
   30,621.80x = 4,102,458,043.55
5. Step 5: Solve for x
   x = 4,102,458,043.55/30,621.80
6. Step 6: Final answer
   x = 133,971.83