Finding the Third Proportional to 64,206.75 and 99,807.25

Step by Step Solution

1. Step 1: Write the proportion equation
   64,206.75 : 99,807.25 = 99,807.25 : x
2. Step 2: Convert to fraction form
   64,206.75/99,807.25 = 99,807.25/x
3. Step 3: Cross multiply
   64,206.75x = 99,807.25 × 99,807.25
4. Step 4: Simplify right side
   64,206.75x = 9,961,487,152.56
5. Step 5: Solve for x
   x = 9,961,487,152.56/64,206.75
6. Step 6: Final answer
   x = 155,147.04