Finding the Third Proportional to 6,605,139 and 13,663,374

Step by Step Solution

1. Step 1: Write the proportion equation
   6,605,139 : 13,663,374 = 13,663,374 : x
2. Step 2: Convert to fraction form
   6,605,139/13,663,374 = 13,663,374/x
3. Step 3: Cross multiply
   6,605,139x = 13,663,374 × 13,663,374
4. Step 4: Simplify right side
   6,605,139x = 186,687,789,063,876
5. Step 5: Solve for x
   x = 186,687,789,063,876/6,605,139
6. Step 6: Final answer
   x = 28,264,021.25