Finding the Third Proportional to 31,181.25 and 66,792.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,181.25 : 66,792.75 = 66,792.75 : x
2. Step 2: Convert to fraction form
   31,181.25/66,792.75 = 66,792.75/x
3. Step 3: Cross multiply
   31,181.25x = 66,792.75 × 66,792.75
4. Step 4: Simplify right side
   31,181.25x = 4,461,271,452.56
5. Step 5: Solve for x
   x = 4,461,271,452.56/31,181.25
6. Step 6: Final answer
   x = 143,075.45