Finding the Third Proportional to 435,586.50 and 653,380.50

Step by Step Solution

1. Step 1: Write the proportion equation
   435,586.50 : 653,380.50 = 653,380.50 : x
2. Step 2: Convert to fraction form
   435,586.50/653,380.50 = 653,380.50/x
3. Step 3: Cross multiply
   435,586.50x = 653,380.50 × 653,380.50
4. Step 4: Simplify right side
   435,586.50x = 426,906,077,780.25
5. Step 5: Solve for x
   x = 426,906,077,780.25/435,586.50
6. Step 6: Final answer
   x = 980,071.88