Finding the Third Proportional to 131,820 and 199,579.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,820 : 199,579.50 = 199,579.50 : x
2. Step 2: Convert to fraction form
   131,820/199,579.50 = 199,579.50/x
3. Step 3: Cross multiply
   131,820x = 199,579.50 × 199,579.50
4. Step 4: Simplify right side
   131,820x = 39,831,976,820.25
5. Step 5: Solve for x
   x = 39,831,976,820.25/131,820
6. Step 6: Final answer
   x = 302,169.45