Finding the Third Proportional to 7,078,787 and 10,931,117.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,078,787 : 10,931,117.50 = 10,931,117.50 : x
2. Step 2: Convert to fraction form
   7,078,787/10,931,117.50 = 10,931,117.50/x
3. Step 3: Cross multiply
   7,078,787x = 10,931,117.50 × 10,931,117.50
4. Step 4: Simplify right side
   7,078,787x = 119,489,329,798,806.25
5. Step 5: Solve for x
   x = 119,489,329,798,806.25/7,078,787
6. Step 6: Final answer
   x = 16,879,915.98