Finding the Third Proportional to 6,221,419 and 12,939,468

Step by Step Solution

1. Step 1: Write the proportion equation
   6,221,419 : 12,939,468 = 12,939,468 : x
2. Step 2: Convert to fraction form
   6,221,419/12,939,468 = 12,939,468/x
3. Step 3: Cross multiply
   6,221,419x = 12,939,468 × 12,939,468
4. Step 4: Simplify right side
   6,221,419x = 167,429,832,123,024
5. Step 5: Solve for x
   x = 167,429,832,123,024/6,221,419
6. Step 6: Final answer
   x = 26,911,839.91