Finding the Third Proportional to 27,991 and 42,256.50

Step by Step Solution

1. Step 1: Write the proportion equation
   27,991 : 42,256.50 = 42,256.50 : x
2. Step 2: Convert to fraction form
   27,991/42,256.50 = 42,256.50/x
3. Step 3: Cross multiply
   27,991x = 42,256.50 × 42,256.50
4. Step 4: Simplify right side
   27,991x = 1,785,611,792.25
5. Step 5: Solve for x
   x = 1,785,611,792.25/27,991
6. Step 6: Final answer
   x = 63,792.35