Finding the Third Proportional to 108,985.50 and 243,486

Step by Step Solution

1. Step 1: Write the proportion equation
   108,985.50 : 243,486 = 243,486 : x
2. Step 2: Convert to fraction form
   108,985.50/243,486 = 243,486/x
3. Step 3: Cross multiply
   108,985.50x = 243,486 × 243,486
4. Step 4: Simplify right side
   108,985.50x = 59,285,432,196
5. Step 5: Solve for x
   x = 59,285,432,196/108,985.50
6. Step 6: Final answer
   x = 543,975.41