Finding the Third Proportional to 142,025.25 and 309,472.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,025.25 : 309,472.50 = 309,472.50 : x
2. Step 2: Convert to fraction form
   142,025.25/309,472.50 = 309,472.50/x
3. Step 3: Cross multiply
   142,025.25x = 309,472.50 × 309,472.50
4. Step 4: Simplify right side
   142,025.25x = 95,773,228,256.25
5. Step 5: Solve for x
   x = 95,773,228,256.25/142,025.25
6. Step 6: Final answer
   x = 674,339.44