Finding the Third Proportional to 64,390.50 and 98,499.75

Step by Step Solution

1. Step 1: Write the proportion equation
   64,390.50 : 98,499.75 = 98,499.75 : x
2. Step 2: Convert to fraction form
   64,390.50/98,499.75 = 98,499.75/x
3. Step 3: Cross multiply
   64,390.50x = 98,499.75 × 98,499.75
4. Step 4: Simplify right side
   64,390.50x = 9,702,200,750.06
5. Step 5: Solve for x
   x = 9,702,200,750.06/64,390.50
6. Step 6: Final answer
   x = 150,677.52