Finding the Third Proportional to 64,390.50 and 98,499.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,390.50 : 98,499.50 = 98,499.50 : x
2. Step 2: Convert to fraction form
   64,390.50/98,499.50 = 98,499.50/x
3. Step 3: Cross multiply
   64,390.50x = 98,499.50 × 98,499.50
4. Step 4: Simplify right side
   64,390.50x = 9,702,151,500.25
5. Step 5: Solve for x
   x = 9,702,151,500.25/64,390.50
6. Step 6: Final answer
   x = 150,676.75