Finding the Third Proportional to 6,128,908 and 12,432,920

Step by Step Solution

1. Step 1: Write the proportion equation
   6,128,908 : 12,432,920 = 12,432,920 : x
2. Step 2: Convert to fraction form
   6,128,908/12,432,920 = 12,432,920/x
3. Step 3: Cross multiply
   6,128,908x = 12,432,920 × 12,432,920
4. Step 4: Simplify right side
   6,128,908x = 154,577,499,726,400
5. Step 5: Solve for x
   x = 154,577,499,726,400/6,128,908
6. Step 6: Final answer
   x = 25,221,050.75