Finding the Third Proportional to 81,118,454 and 123,720,826

Step by Step Solution

1. Step 1: Write the proportion equation
   81,118,454 : 123,720,826 = 123,720,826 : x
2. Step 2: Convert to fraction form
   81,118,454/123,720,826 = 123,720,826/x
3. Step 3: Cross multiply
   81,118,454x = 123,720,826 × 123,720,826
4. Step 4: Simplify right side
   81,118,454x = 15,306,842,786,122,276
5. Step 5: Solve for x
   x = 15,306,842,786,122,276/81,118,454
6. Step 6: Final answer
   x = 188,697,417.56