Finding the Third Proportional to 64,678.50 and 96,618.75

Step by Step Solution

1. Step 1: Write the proportion equation
   64,678.50 : 96,618.75 = 96,618.75 : x
2. Step 2: Convert to fraction form
   64,678.50/96,618.75 = 96,618.75/x
3. Step 3: Cross multiply
   64,678.50x = 96,618.75 × 96,618.75
4. Step 4: Simplify right side
   64,678.50x = 9,335,182,851.56
5. Step 5: Solve for x
   x = 9,335,182,851.56/64,678.50
6. Step 6: Final answer
   x = 144,332.09