Finding the Third Proportional to 42,312 and 90,058

Step by Step Solution

1. Step 1: Write the proportion equation
   42,312 : 90,058 = 90,058 : x
2. Step 2: Convert to fraction form
   42,312/90,058 = 90,058/x
3. Step 3: Cross multiply
   42,312x = 90,058 × 90,058
4. Step 4: Simplify right side
   42,312x = 8,110,443,364
5. Step 5: Solve for x
   x = 8,110,443,364/42,312
6. Step 6: Final answer
   x = 191,681.87