Finding the Third Proportional to 435,730.31 and 666,136.50

Step by Step Solution

1. Step 1: Write the proportion equation
   435,730.31 : 666,136.50 = 666,136.50 : x
2. Step 2: Convert to fraction form
   435,730.31/666,136.50 = 666,136.50/x
3. Step 3: Cross multiply
   435,730.31x = 666,136.50 × 666,136.50
4. Step 4: Simplify right side
   435,730.31x = 443,737,836,632.25
5. Step 5: Solve for x
   x = 443,737,836,632.25/435,730.31
6. Step 6: Final answer
   x = 1,018,377.25