Finding the Third Proportional to 8,527,391 and 13,120,443

Step by Step Solution

1. Step 1: Write the proportion equation
   8,527,391 : 13,120,443 = 13,120,443 : x
2. Step 2: Convert to fraction form
   8,527,391/13,120,443 = 13,120,443/x
3. Step 3: Cross multiply
   8,527,391x = 13,120,443 × 13,120,443
4. Step 4: Simplify right side
   8,527,391x = 172,146,024,516,249
5. Step 5: Solve for x
   x = 172,146,024,516,249/8,527,391
6. Step 6: Final answer
   x = 20,187,420.10