Finding the Third Proportional to 435,558 and 653,340

Step by Step Solution

1. Step 1: Write the proportion equation
   435,558 : 653,340 = 653,340 : x
2. Step 2: Convert to fraction form
   435,558/653,340 = 653,340/x
3. Step 3: Cross multiply
   435,558x = 653,340 × 653,340
4. Step 4: Simplify right side
   435,558x = 426,853,155,600
5. Step 5: Solve for x
   x = 426,853,155,600/435,558
6. Step 6: Final answer
   x = 980,014.50