Finding the Third Proportional to 3,921,302 and 8,615,828

Step by Step Solution

1. Step 1: Write the proportion equation
   3,921,302 : 8,615,828 = 8,615,828 : x
2. Step 2: Convert to fraction form
   3,921,302/8,615,828 = 8,615,828/x
3. Step 3: Cross multiply
   3,921,302x = 8,615,828 × 8,615,828
4. Step 4: Simplify right side
   3,921,302x = 74,232,492,125,584
5. Step 5: Solve for x
   x = 74,232,492,125,584/3,921,302
6. Step 6: Final answer
   x = 18,930,572.58