Finding the Third Proportional to 3,913,272 and 8,477,892

Step by Step Solution

1. Step 1: Write the proportion equation
   3,913,272 : 8,477,892 = 8,477,892 : x
2. Step 2: Convert to fraction form
   3,913,272/8,477,892 = 8,477,892/x
3. Step 3: Cross multiply
   3,913,272x = 8,477,892 × 8,477,892
4. Step 4: Simplify right side
   3,913,272x = 71,874,652,763,664
5. Step 5: Solve for x
   x = 71,874,652,763,664/3,913,272
6. Step 6: Final answer
   x = 18,366,894.19