Finding the Third Proportional to 85,510.69 and 187,439.06

Step by Step Solution

1. Step 1: Write the proportion equation
   85,510.69 : 187,439.06 = 187,439.06 : x
2. Step 2: Convert to fraction form
   85,510.69/187,439.06 = 187,439.06/x
3. Step 3: Cross multiply
   85,510.69x = 187,439.06 × 187,439.06
4. Step 4: Simplify right side
   85,510.69x = 35,133,402,150.88
5. Step 5: Solve for x
   x = 35,133,402,150.88/85,510.69
6. Step 6: Final answer
   x = 410,865.63