Finding the Third Proportional to 3,899,920 and 8,696,060

Step by Step Solution

1. Step 1: Write the proportion equation
   3,899,920 : 8,696,060 = 8,696,060 : x
2. Step 2: Convert to fraction form
   3,899,920/8,696,060 = 8,696,060/x
3. Step 3: Cross multiply
   3,899,920x = 8,696,060 × 8,696,060
4. Step 4: Simplify right side
   3,899,920x = 75,621,459,523,600
5. Step 5: Solve for x
   x = 75,621,459,523,600/3,899,920
6. Step 6: Final answer
   x = 19,390,515.58