Finding the Third Proportional to 3,655,446 and 7,920,434

Step by Step Solution

1. Step 1: Write the proportion equation
   3,655,446 : 7,920,434 = 7,920,434 : x
2. Step 2: Convert to fraction form
   3,655,446/7,920,434 = 7,920,434/x
3. Step 3: Cross multiply
   3,655,446x = 7,920,434 × 7,920,434
4. Step 4: Simplify right side
   3,655,446x = 62,733,274,748,356
5. Step 5: Solve for x
   x = 62,733,274,748,356/3,655,446
6. Step 6: Final answer
   x = 17,161,592.52