Finding the Third Proportional to 118,490.34 and 253,656.56

Step by Step Solution

1. Step 1: Write the proportion equation
   118,490.34 : 253,656.56 = 253,656.56 : x
2. Step 2: Convert to fraction form
   118,490.34/253,656.56 = 253,656.56/x
3. Step 3: Cross multiply
   118,490.34x = 253,656.56 × 253,656.56
4. Step 4: Simplify right side
   118,490.34x = 64,341,651,699.32
5. Step 5: Solve for x
   x = 64,341,651,699.32/118,490.34
6. Step 6: Final answer
   x = 543,011.77