Finding the Third Proportional to 5,180,406 and 7,842,861

Step by Step Solution

1. Step 1: Write the proportion equation
   5,180,406 : 7,842,861 = 7,842,861 : x
2. Step 2: Convert to fraction form
   5,180,406/7,842,861 = 7,842,861/x
3. Step 3: Cross multiply
   5,180,406x = 7,842,861 × 7,842,861
4. Step 4: Simplify right side
   5,180,406x = 61,510,468,665,321
5. Step 5: Solve for x
   x = 61,510,468,665,321/5,180,406
6. Step 6: Final answer
   x = 11,873,677.21