Finding the Third Proportional to 4,018,151 and 8,428,630

Step by Step Solution

1. Step 1: Write the proportion equation
   4,018,151 : 8,428,630 = 8,428,630 : x
2. Step 2: Convert to fraction form
   4,018,151/8,428,630 = 8,428,630/x
3. Step 3: Cross multiply
   4,018,151x = 8,428,630 × 8,428,630
4. Step 4: Simplify right side
   4,018,151x = 71,041,803,676,900
5. Step 5: Solve for x
   x = 71,041,803,676,900/4,018,151
6. Step 6: Final answer
   x = 17,680,222.49