Finding the Third Proportional to 7,766,040 and 12,156,079.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,766,040 : 12,156,079.50 = 12,156,079.50 : x
2. Step 2: Convert to fraction form
   7,766,040/12,156,079.50 = 12,156,079.50/x
3. Step 3: Cross multiply
   7,766,040x = 12,156,079.50 × 12,156,079.50
4. Step 4: Simplify right side
   7,766,040x = 147,770,268,810,320.25
5. Step 5: Solve for x
   x = 147,770,268,810,320.25/7,766,040
6. Step 6: Final answer
   x = 19,027,750.15