Finding the Third Proportional to 3,865,788 and 8,229,240

Step by Step Solution

1. Step 1: Write the proportion equation
   3,865,788 : 8,229,240 = 8,229,240 : x
2. Step 2: Convert to fraction form
   3,865,788/8,229,240 = 8,229,240/x
3. Step 3: Cross multiply
   3,865,788x = 8,229,240 × 8,229,240
4. Step 4: Simplify right side
   3,865,788x = 67,720,390,977,600
5. Step 5: Solve for x
   x = 67,720,390,977,600/3,865,788
6. Step 6: Final answer
   x = 17,517,875.00