Finding the Third Proportional to 115,876.50 and 253,890

Step by Step Solution

1. Step 1: Write the proportion equation
   115,876.50 : 253,890 = 253,890 : x
2. Step 2: Convert to fraction form
   115,876.50/253,890 = 253,890/x
3. Step 3: Cross multiply
   115,876.50x = 253,890 × 253,890
4. Step 4: Simplify right side
   115,876.50x = 64,460,132,100
5. Step 5: Solve for x
   x = 64,460,132,100/115,876.50
6. Step 6: Final answer
   x = 556,283.04