Finding the Third Proportional to 118,782 and 252,139.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,782 : 252,139.50 = 252,139.50 : x
2. Step 2: Convert to fraction form
   118,782/252,139.50 = 252,139.50/x
3. Step 3: Cross multiply
   118,782x = 252,139.50 × 252,139.50
4. Step 4: Simplify right side
   118,782x = 63,574,327,460.25
5. Step 5: Solve for x
   x = 63,574,327,460.25/118,782
6. Step 6: Final answer
   x = 535,218.53