Finding the Third Proportional to 78,749,768 and 123,253,901

Step by Step Solution

1. Step 1: Write the proportion equation
   78,749,768 : 123,253,901 = 123,253,901 : x
2. Step 2: Convert to fraction form
   78,749,768/123,253,901 = 123,253,901/x
3. Step 3: Cross multiply
   78,749,768x = 123,253,901 × 123,253,901
4. Step 4: Simplify right side
   78,749,768x = 15,191,524,111,717,800
5. Step 5: Solve for x
   x = 15,191,524,111,717,800/78,749,768
6. Step 6: Final answer
   x = 192,908,811.00