Finding the Third Proportional to 661,404 and 1,435,560

Step by Step Solution

1. Step 1: Write the proportion equation
   661,404 : 1,435,560 = 1,435,560 : x
2. Step 2: Convert to fraction form
   661,404/1,435,560 = 1,435,560/x
3. Step 3: Cross multiply
   661,404x = 1,435,560 × 1,435,560
4. Step 4: Simplify right side
   661,404x = 2,060,832,513,600
5. Step 5: Solve for x
   x = 2,060,832,513,600/661,404
6. Step 6: Final answer
   x = 3,115,845.25