Finding the Third Proportional to 117,288 and 276,601.50

Step by Step Solution

1. Step 1: Write the proportion equation
   117,288 : 276,601.50 = 276,601.50 : x
2. Step 2: Convert to fraction form
   117,288/276,601.50 = 276,601.50/x
3. Step 3: Cross multiply
   117,288x = 276,601.50 × 276,601.50
4. Step 4: Simplify right side
   117,288x = 76,508,389,802.25
5. Step 5: Solve for x
   x = 76,508,389,802.25/117,288
6. Step 6: Final answer
   x = 652,312.17