Finding the Third Proportional to 3,655,445 and 7,920,432

Step by Step Solution

1. Step 1: Write the proportion equation
   3,655,445 : 7,920,432 = 7,920,432 : x
2. Step 2: Convert to fraction form
   3,655,445/7,920,432 = 7,920,432/x
3. Step 3: Cross multiply
   3,655,445x = 7,920,432 × 7,920,432
4. Step 4: Simplify right side
   3,655,445x = 62,733,243,066,624
5. Step 5: Solve for x
   x = 62,733,243,066,624/3,655,445
6. Step 6: Final answer
   x = 17,161,588.55