Finding the Third Proportional to 165,156 and 253,060

Step by Step Solution

1. Step 1: Write the proportion equation
   165,156 : 253,060 = 253,060 : x
2. Step 2: Convert to fraction form
   165,156/253,060 = 253,060/x
3. Step 3: Cross multiply
   165,156x = 253,060 × 253,060
4. Step 4: Simplify right side
   165,156x = 64,039,363,600
5. Step 5: Solve for x
   x = 64,039,363,600/165,156
6. Step 6: Final answer
   x = 387,750.75