Finding the Third Proportional to 124,390,980 and 256,730,952

Step by Step Solution

1. Step 1: Write the proportion equation
   124,390,980 : 256,730,952 = 256,730,952 : x
2. Step 2: Convert to fraction form
   124,390,980/256,730,952 = 256,730,952/x
3. Step 3: Cross multiply
   124,390,980x = 256,730,952 × 256,730,952
4. Step 4: Simplify right side
   124,390,980x = 65,910,781,714,826,304
5. Step 5: Solve for x
   x = 65,910,781,714,826,304/124,390,980
6. Step 6: Final answer
   x = 529,867,854.69