Finding the Third Proportional to 72,568,710 and 156,681,540

Step by Step Solution

1. Step 1: Write the proportion equation
   72,568,710 : 156,681,540 = 156,681,540 : x
2. Step 2: Convert to fraction form
   72,568,710/156,681,540 = 156,681,540/x
3. Step 3: Cross multiply
   72,568,710x = 156,681,540 × 156,681,540
4. Step 4: Simplify right side
   72,568,710x = 24,549,104,976,771,600
5. Step 5: Solve for x
   x = 24,549,104,976,771,600/72,568,710
6. Step 6: Final answer
   x = 338,287,741.05