Finding the Third Proportional to 7,766,204 and 12,156,339

Step by Step Solution

1. Step 1: Write the proportion equation
   7,766,204 : 12,156,339 = 12,156,339 : x
2. Step 2: Convert to fraction form
   7,766,204/12,156,339 = 12,156,339/x
3. Step 3: Cross multiply
   7,766,204x = 12,156,339 × 12,156,339
4. Step 4: Simplify right side
   7,766,204x = 147,776,577,882,921
5. Step 5: Solve for x
   x = 147,776,577,882,921/7,766,204
6. Step 6: Final answer
   x = 19,028,160.72