Finding the Third Proportional to 3,390,988 and 5,121,042

Step by Step Solution

1. Step 1: Write the proportion equation
   3,390,988 : 5,121,042 = 5,121,042 : x
2. Step 2: Convert to fraction form
   3,390,988/5,121,042 = 5,121,042/x
3. Step 3: Cross multiply
   3,390,988x = 5,121,042 × 5,121,042
4. Step 4: Simplify right side
   3,390,988x = 26,225,071,165,764
5. Step 5: Solve for x
   x = 26,225,071,165,764/3,390,988
6. Step 6: Final answer
   x = 7,733,755.23