Finding the Third Proportional to 661,403 and 1,435,558

Step by Step Solution

1. Step 1: Write the proportion equation
   661,403 : 1,435,558 = 1,435,558 : x
2. Step 2: Convert to fraction form
   661,403/1,435,558 = 1,435,558/x
3. Step 3: Cross multiply
   661,403x = 1,435,558 × 1,435,558
4. Step 4: Simplify right side
   661,403x = 2,060,826,771,364
5. Step 5: Solve for x
   x = 2,060,826,771,364/661,403
6. Step 6: Final answer
   x = 3,115,841.28