Finding the Third Proportional to 162,582 and 243,138

Step by Step Solution

1. Step 1: Write the proportion equation
   162,582 : 243,138 = 243,138 : x
2. Step 2: Convert to fraction form
   162,582/243,138 = 243,138/x
3. Step 3: Cross multiply
   162,582x = 243,138 × 243,138
4. Step 4: Simplify right side
   162,582x = 59,116,087,044
5. Step 5: Solve for x
   x = 59,116,087,044/162,582
6. Step 6: Final answer
   x = 363,607.82