Finding the Third Proportional to 117,009.50 and 276,120

Step by Step Solution

1. Step 1: Write the proportion equation
   117,009.50 : 276,120 = 276,120 : x
2. Step 2: Convert to fraction form
   117,009.50/276,120 = 276,120/x
3. Step 3: Cross multiply
   117,009.50x = 276,120 × 276,120
4. Step 4: Simplify right side
   117,009.50x = 76,242,254,400
5. Step 5: Solve for x
   x = 76,242,254,400/117,009.50
6. Step 6: Final answer
   x = 651,590.29