Finding the Third Proportional to 140,047 and 209,581.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,047 : 209,581.50 = 209,581.50 : x
2. Step 2: Convert to fraction form
   140,047/209,581.50 = 209,581.50/x
3. Step 3: Cross multiply
   140,047x = 209,581.50 × 209,581.50
4. Step 4: Simplify right side
   140,047x = 43,924,405,142.25
5. Step 5: Solve for x
   x = 43,924,405,142.25/140,047
6. Step 6: Final answer
   x = 313,640.46