Finding the Third Proportional to 142,661.25 and 307,397.25

Step by Step Solution

1. Step 1: Write the proportion equation
   142,661.25 : 307,397.25 = 307,397.25 : x
2. Step 2: Convert to fraction form
   142,661.25/307,397.25 = 307,397.25/x
3. Step 3: Cross multiply
   142,661.25x = 307,397.25 × 307,397.25
4. Step 4: Simplify right side
   142,661.25x = 94,493,069,307.56
5. Step 5: Solve for x
   x = 94,493,069,307.56/142,661.25
6. Step 6: Final answer
   x = 662,359.75