Finding the Third Proportional to 5,516,740 and 8,610,388

Step by Step Solution

1. Step 1: Write the proportion equation
   5,516,740 : 8,610,388 = 8,610,388 : x
2. Step 2: Convert to fraction form
   5,516,740/8,610,388 = 8,610,388/x
3. Step 3: Cross multiply
   5,516,740x = 8,610,388 × 8,610,388
4. Step 4: Simplify right side
   5,516,740x = 74,138,781,510,544
5. Step 5: Solve for x
   x = 74,138,781,510,544/5,516,740
6. Step 6: Final answer
   x = 13,438,875.41