Finding the Third Proportional to 7,200,396 and 10,128,258

Step by Step Solution

1. Step 1: Write the proportion equation
   7,200,396 : 10,128,258 = 10,128,258 : x
2. Step 2: Convert to fraction form
   7,200,396/10,128,258 = 10,128,258/x
3. Step 3: Cross multiply
   7,200,396x = 10,128,258 × 10,128,258
4. Step 4: Simplify right side
   7,200,396x = 102,581,610,114,564
5. Step 5: Solve for x
   x = 102,581,610,114,564/7,200,396
6. Step 6: Final answer
   x = 14,246,662.28