Finding the Third Proportional to 42,792.75 and 86,881.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,792.75 : 86,881.50 = 86,881.50 : x
2. Step 2: Convert to fraction form
   42,792.75/86,881.50 = 86,881.50/x
3. Step 3: Cross multiply
   42,792.75x = 86,881.50 × 86,881.50
4. Step 4: Simplify right side
   42,792.75x = 7,548,395,042.25
5. Step 5: Solve for x
   x = 7,548,395,042.25/42,792.75
6. Step 6: Final answer
   x = 176,394.25