Finding the Third Proportional to 28,700 and 42,107

Step by Step Solution

1. Step 1: Write the proportion equation
   28,700 : 42,107 = 42,107 : x
2. Step 2: Convert to fraction form
   28,700/42,107 = 42,107/x
3. Step 3: Cross multiply
   28,700x = 42,107 × 42,107
4. Step 4: Simplify right side
   28,700x = 1,772,999,449
5. Step 5: Solve for x
   x = 1,772,999,449/28,700
6. Step 6: Final answer
   x = 61,776.98