Finding the Third Proportional to 69,539.50 and 142,385

Step by Step Solution

1. Step 1: Write the proportion equation
   69,539.50 : 142,385 = 142,385 : x
2. Step 2: Convert to fraction form
   69,539.50/142,385 = 142,385/x
3. Step 3: Cross multiply
   69,539.50x = 142,385 × 142,385
4. Step 4: Simplify right side
   69,539.50x = 20,273,488,225
5. Step 5: Solve for x
   x = 20,273,488,225/69,539.50
6. Step 6: Final answer
   x = 291,539.17