Finding the Third Proportional to 5,338,142 and 8,272,656

Step by Step Solution

1. Step 1: Write the proportion equation
   5,338,142 : 8,272,656 = 8,272,656 : x
2. Step 2: Convert to fraction form
   5,338,142/8,272,656 = 8,272,656/x
3. Step 3: Cross multiply
   5,338,142x = 8,272,656 × 8,272,656
4. Step 4: Simplify right side
   5,338,142x = 68,436,837,294,336
5. Step 5: Solve for x
   x = 68,436,837,294,336/5,338,142
6. Step 6: Final answer
   x = 12,820,347.85