Finding the Third Proportional to 72,404,200 and 156,138,128

Step by Step Solution

1. Step 1: Write the proportion equation
   72,404,200 : 156,138,128 = 156,138,128 : x
2. Step 2: Convert to fraction form
   72,404,200/156,138,128 = 156,138,128/x
3. Step 3: Cross multiply
   72,404,200x = 156,138,128 × 156,138,128
4. Step 4: Simplify right side
   72,404,200x = 24,379,115,015,344,384
5. Step 5: Solve for x
   x = 24,379,115,015,344,384/72,404,200
6. Step 6: Final answer
   x = 336,708,575.13