Finding the Third Proportional to 166,521 and 247,207.50

Step by Step Solution

1. Step 1: Write the proportion equation
   166,521 : 247,207.50 = 247,207.50 : x
2. Step 2: Convert to fraction form
   166,521/247,207.50 = 247,207.50/x
3. Step 3: Cross multiply
   166,521x = 247,207.50 × 247,207.50
4. Step 4: Simplify right side
   166,521x = 61,111,548,056.25
5. Step 5: Solve for x
   x = 61,111,548,056.25/166,521
6. Step 6: Final answer
   x = 366,990.04