Finding the Third Proportional to 56,716,680 and 123,699,408

Step by Step Solution

1. Step 1: Write the proportion equation
   56,716,680 : 123,699,408 = 123,699,408 : x
2. Step 2: Convert to fraction form
   56,716,680/123,699,408 = 123,699,408/x
3. Step 3: Cross multiply
   56,716,680x = 123,699,408 × 123,699,408
4. Step 4: Simplify right side
   56,716,680x = 15,301,543,539,550,464
5. Step 5: Solve for x
   x = 15,301,543,539,550,464/56,716,680
6. Step 6: Final answer
   x = 269,789,126.22