Finding the Third Proportional to 124,628,759 and 288,493,009.50

Step by Step Solution

1. Step 1: Write the proportion equation
   124,628,759 : 288,493,009.50 = 288,493,009.50 : x
2. Step 2: Convert to fraction form
   124,628,759/288,493,009.50 = 288,493,009.50/x
3. Step 3: Cross multiply
   124,628,759x = 288,493,009.50 × 288,493,009.50
4. Step 4: Simplify right side
   124,628,759x = 83,228,216,530,367,088
5. Step 5: Solve for x
   x = 83,228,216,530,367,088/124,628,759
6. Step 6: Final answer
   x = 667,809,077.12