Finding the Third Proportional to 58,178.75 and 90,076

Step by Step Solution

1. Step 1: Write the proportion equation
   58,178.75 : 90,076 = 90,076 : x
2. Step 2: Convert to fraction form
   58,178.75/90,076 = 90,076/x
3. Step 3: Cross multiply
   58,178.75x = 90,076 × 90,076
4. Step 4: Simplify right side
   58,178.75x = 8,113,685,776
5. Step 5: Solve for x
   x = 8,113,685,776/58,178.75
6. Step 6: Final answer
   x = 139,461.33