Finding the Third Proportional to 42,645,729 and 65,508,514.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,645,729 : 65,508,514.50 = 65,508,514.50 : x
2. Step 2: Convert to fraction form
   42,645,729/65,508,514.50 = 65,508,514.50/x
3. Step 3: Cross multiply
   42,645,729x = 65,508,514.50 × 65,508,514.50
4. Step 4: Simplify right side
   42,645,729x = 4,291,365,471,996,710
5. Step 5: Solve for x
   x = 4,291,365,471,996,710/42,645,729
6. Step 6: Final answer
   x = 100,628,259.21