Finding the Third Proportional to 5,216,238 and 7,979,254

Step by Step Solution

1. Step 1: Write the proportion equation
   5,216,238 : 7,979,254 = 7,979,254 : x
2. Step 2: Convert to fraction form
   5,216,238/7,979,254 = 7,979,254/x
3. Step 3: Cross multiply
   5,216,238x = 7,979,254 × 7,979,254
4. Step 4: Simplify right side
   5,216,238x = 63,668,494,396,516
5. Step 5: Solve for x
   x = 63,668,494,396,516/5,216,238
6. Step 6: Final answer
   x = 12,205,826.19