Finding the Third Proportional to 2,120,432 and 4,419,712

Step by Step Solution

1. Step 1: Write the proportion equation
   2,120,432 : 4,419,712 = 4,419,712 : x
2. Step 2: Convert to fraction form
   2,120,432/4,419,712 = 4,419,712/x
3. Step 3: Cross multiply
   2,120,432x = 4,419,712 × 4,419,712
4. Step 4: Simplify right side
   2,120,432x = 19,533,854,162,944
5. Step 5: Solve for x
   x = 19,533,854,162,944/2,120,432
6. Step 6: Final answer
   x = 9,212,204.95