Finding the Third Proportional to 5,221,688 and 7,982,615

Step by Step Solution

1. Step 1: Write the proportion equation
   5,221,688 : 7,982,615 = 7,982,615 : x
2. Step 2: Convert to fraction form
   5,221,688/7,982,615 = 7,982,615/x
3. Step 3: Cross multiply
   5,221,688x = 7,982,615 × 7,982,615
4. Step 4: Simplify right side
   5,221,688x = 63,722,142,238,225
5. Step 5: Solve for x
   x = 63,722,142,238,225/5,221,688
6. Step 6: Final answer
   x = 12,203,360.72