Finding the Third Proportional to 7,139,715 and 10,876,915.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,139,715 : 10,876,915.50 = 10,876,915.50 : x
2. Step 2: Convert to fraction form
   7,139,715/10,876,915.50 = 10,876,915.50/x
3. Step 3: Cross multiply
   7,139,715x = 10,876,915.50 × 10,876,915.50
4. Step 4: Simplify right side
   7,139,715x = 118,307,290,794,140.25
5. Step 5: Solve for x
   x = 118,307,290,794,140.25/7,139,715
6. Step 6: Final answer
   x = 16,570,309.99