Finding the Third Proportional to 7,777,753 and 12,173,221.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,777,753 : 12,173,221.50 = 12,173,221.50 : x
2. Step 2: Convert to fraction form
   7,777,753/12,173,221.50 = 12,173,221.50/x
3. Step 3: Cross multiply
   7,777,753x = 12,173,221.50 × 12,173,221.50
4. Step 4: Simplify right side
   7,777,753x = 148,187,321,688,062.25
5. Step 5: Solve for x
   x = 148,187,321,688,062.25/7,777,753
6. Step 6: Final answer
   x = 19,052,716.34