Finding the Third Proportional to 5,715,216 and 8,706,816

Step by Step Solution

1. Step 1: Write the proportion equation
   5,715,216 : 8,706,816 = 8,706,816 : x
2. Step 2: Convert to fraction form
   5,715,216/8,706,816 = 8,706,816/x
3. Step 3: Cross multiply
   5,715,216x = 8,706,816 × 8,706,816
4. Step 4: Simplify right side
   5,715,216x = 75,808,644,857,856
5. Step 5: Solve for x
   x = 75,808,644,857,856/5,715,216
6. Step 6: Final answer
   x = 13,264,353.41