Finding the Third Proportional to 163,890 and 247,333.50

Step by Step Solution

1. Step 1: Write the proportion equation
   163,890 : 247,333.50 = 247,333.50 : x
2. Step 2: Convert to fraction form
   163,890/247,333.50 = 247,333.50/x
3. Step 3: Cross multiply
   163,890x = 247,333.50 × 247,333.50
4. Step 4: Simplify right side
   163,890x = 61,173,860,222.25
5. Step 5: Solve for x
   x = 61,173,860,222.25/163,890
6. Step 6: Final answer
   x = 373,261.70