Finding the Third Proportional to 7,139,543 and 10,876,660

Step by Step Solution

1. Step 1: Write the proportion equation
   7,139,543 : 10,876,660 = 10,876,660 : x
2. Step 2: Convert to fraction form
   7,139,543/10,876,660 = 10,876,660/x
3. Step 3: Cross multiply
   7,139,543x = 10,876,660 × 10,876,660
4. Step 4: Simplify right side
   7,139,543x = 118,301,732,755,600
5. Step 5: Solve for x
   x = 118,301,732,755,600/7,139,543
6. Step 6: Final answer
   x = 16,569,930.70