Finding the Third Proportional to 126,899,460 and 272,208,648

Step by Step Solution

1. Step 1: Write the proportion equation
   126,899,460 : 272,208,648 = 272,208,648 : x
2. Step 2: Convert to fraction form
   126,899,460/272,208,648 = 272,208,648/x
3. Step 3: Cross multiply
   126,899,460x = 272,208,648 × 272,208,648
4. Step 4: Simplify right side
   126,899,460x = 74,097,548,045,987,904
5. Step 5: Solve for x
   x = 74,097,548,045,987,904/126,899,460
6. Step 6: Final answer
   x = 583,907,512.66