Finding the Third Proportional to 129,063.50 and 276,810

Step by Step Solution

1. Step 1: Write the proportion equation
   129,063.50 : 276,810 = 276,810 : x
2. Step 2: Convert to fraction form
   129,063.50/276,810 = 276,810/x
3. Step 3: Cross multiply
   129,063.50x = 276,810 × 276,810
4. Step 4: Simplify right side
   129,063.50x = 76,623,776,100
5. Step 5: Solve for x
   x = 76,623,776,100/129,063.50
6. Step 6: Final answer
   x = 593,690.52