Finding the Third Proportional to 3,886,752 and 8,538,720

Step by Step Solution

1. Step 1: Write the proportion equation
   3,886,752 : 8,538,720 = 8,538,720 : x
2. Step 2: Convert to fraction form
   3,886,752/8,538,720 = 8,538,720/x
3. Step 3: Cross multiply
   3,886,752x = 8,538,720 × 8,538,720
4. Step 4: Simplify right side
   3,886,752x = 72,909,739,238,400
5. Step 5: Solve for x
   x = 72,909,739,238,400/3,886,752
6. Step 6: Final answer
   x = 18,758,526.20