Finding the Third Proportional to 3,655,448 and 7,920,438

Step by Step Solution

1. Step 1: Write the proportion equation
   3,655,448 : 7,920,438 = 7,920,438 : x
2. Step 2: Convert to fraction form
   3,655,448/7,920,438 = 7,920,438/x
3. Step 3: Cross multiply
   3,655,448x = 7,920,438 × 7,920,438
4. Step 4: Simplify right side
   3,655,448x = 62,733,338,111,844
5. Step 5: Solve for x
   x = 62,733,338,111,844/3,655,448
6. Step 6: Final answer
   x = 17,161,600.47