Finding the Third Proportional to 3,913,518 and 5,407,602

Step by Step Solution

1. Step 1: Write the proportion equation
   3,913,518 : 5,407,602 = 5,407,602 : x
2. Step 2: Convert to fraction form
   3,913,518/5,407,602 = 5,407,602/x
3. Step 3: Cross multiply
   3,913,518x = 5,407,602 × 5,407,602
4. Step 4: Simplify right side
   3,913,518x = 29,242,159,390,404
5. Step 5: Solve for x
   x = 29,242,159,390,404/3,913,518
6. Step 6: Final answer
   x = 7,472,090.17