Finding the Third Proportional to 5,388,058 and 8,138,066

Step by Step Solution

1. Step 1: Write the proportion equation
   5,388,058 : 8,138,066 = 8,138,066 : x
2. Step 2: Convert to fraction form
   5,388,058/8,138,066 = 8,138,066/x
3. Step 3: Cross multiply
   5,388,058x = 8,138,066 × 8,138,066
4. Step 4: Simplify right side
   5,388,058x = 66,228,118,220,356
5. Step 5: Solve for x
   x = 66,228,118,220,356/5,388,058
6. Step 6: Final answer
   x = 12,291,649.09