Finding the Third Proportional to 78,749,764 and 123,253,896

Step by Step Solution

1. Step 1: Write the proportion equation
   78,749,764 : 123,253,896 = 123,253,896 : x
2. Step 2: Convert to fraction form
   78,749,764/123,253,896 = 123,253,896/x
3. Step 3: Cross multiply
   78,749,764x = 123,253,896 × 123,253,896
4. Step 4: Simplify right side
   78,749,764x = 15,191,522,879,178,816
5. Step 5: Solve for x
   x = 15,191,522,879,178,816/78,749,764
6. Step 6: Final answer
   x = 192,908,805.15