Finding the Third Proportional to 64,687.50 and 141,403.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,687.50 : 141,403.50 = 141,403.50 : x
2. Step 2: Convert to fraction form
   64,687.50/141,403.50 = 141,403.50/x
3. Step 3: Cross multiply
   64,687.50x = 141,403.50 × 141,403.50
4. Step 4: Simplify right side
   64,687.50x = 19,994,949,812.25
5. Step 5: Solve for x
   x = 19,994,949,812.25/64,687.50
6. Step 6: Final answer
   x = 309,100.67