Finding the Third Proportional to 140,718 and 198,166.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,718 : 198,166.50 = 198,166.50 : x
2. Step 2: Convert to fraction form
   140,718/198,166.50 = 198,166.50/x
3. Step 3: Cross multiply
   140,718x = 198,166.50 × 198,166.50
4. Step 4: Simplify right side
   140,718x = 39,269,961,722.25
5. Step 5: Solve for x
   x = 39,269,961,722.25/140,718
6. Step 6: Final answer
   x = 279,068.50