Finding the Third Proportional to 201,690 and 282,700.13

Step by Step Solution

1. Step 1: Write the proportion equation
   201,690 : 282,700.13 = 282,700.13 : x
2. Step 2: Convert to fraction form
   201,690/282,700.13 = 282,700.13/x
3. Step 3: Cross multiply
   201,690x = 282,700.13 × 282,700.13
4. Step 4: Simplify right side
   201,690x = 79,919,360,675.02
5. Step 5: Solve for x
   x = 79,919,360,675.02/201,690
6. Step 6: Final answer
   x = 396,248.50