Finding the Third Proportional to 5,258,112 and 8,465,440

Step by Step Solution

1. Step 1: Write the proportion equation
   5,258,112 : 8,465,440 = 8,465,440 : x
2. Step 2: Convert to fraction form
   5,258,112/8,465,440 = 8,465,440/x
3. Step 3: Cross multiply
   5,258,112x = 8,465,440 × 8,465,440
4. Step 4: Simplify right side
   5,258,112x = 71,663,674,393,600
5. Step 5: Solve for x
   x = 71,663,674,393,600/5,258,112
6. Step 6: Final answer
   x = 13,629,164.69