Finding the Third Proportional to 7,766,206 and 12,156,342

Step by Step Solution

1. Step 1: Write the proportion equation
   7,766,206 : 12,156,342 = 12,156,342 : x
2. Step 2: Convert to fraction form
   7,766,206/12,156,342 = 12,156,342/x
3. Step 3: Cross multiply
   7,766,206x = 12,156,342 × 12,156,342
4. Step 4: Simplify right side
   7,766,206x = 147,776,650,820,964
5. Step 5: Solve for x
   x = 147,776,650,820,964/7,766,206
6. Step 6: Final answer
   x = 19,028,165.21