Finding the Third Proportional to 112,991 and 245,422

Step by Step Solution

1. Step 1: Write the proportion equation
   112,991 : 245,422 = 245,422 : x
2. Step 2: Convert to fraction form
   112,991/245,422 = 245,422/x
3. Step 3: Cross multiply
   112,991x = 245,422 × 245,422
4. Step 4: Simplify right side
   112,991x = 60,231,958,084
5. Step 5: Solve for x
   x = 60,231,958,084/112,991
6. Step 6: Final answer
   x = 533,068.63