Finding the Third Proportional to 7,766,210 and 12,156,348

Step by Step Solution

1. Step 1: Write the proportion equation
   7,766,210 : 12,156,348 = 12,156,348 : x
2. Step 2: Convert to fraction form
   7,766,210/12,156,348 = 12,156,348/x
3. Step 3: Cross multiply
   7,766,210x = 12,156,348 × 12,156,348
4. Step 4: Simplify right side
   7,766,210x = 147,776,796,697,104
5. Step 5: Solve for x
   x = 147,776,796,697,104/7,766,210
6. Step 6: Final answer
   x = 19,028,174.19