Finding the Third Proportional to 89,345 and 186,040

Step by Step Solution

1. Step 1: Write the proportion equation
   89,345 : 186,040 = 186,040 : x
2. Step 2: Convert to fraction form
   89,345/186,040 = 186,040/x
3. Step 3: Cross multiply
   89,345x = 186,040 × 186,040
4. Step 4: Simplify right side
   89,345x = 34,610,881,600
5. Step 5: Solve for x
   x = 34,610,881,600/89,345
6. Step 6: Final answer
   x = 387,384.65