Finding the Third Proportional to 162,789 and 352,642.50

Step by Step Solution

1. Step 1: Write the proportion equation
   162,789 : 352,642.50 = 352,642.50 : x
2. Step 2: Convert to fraction form
   162,789/352,642.50 = 352,642.50/x
3. Step 3: Cross multiply
   162,789x = 352,642.50 × 352,642.50
4. Step 4: Simplify right side
   162,789x = 124,356,732,806.25
5. Step 5: Solve for x
   x = 124,356,732,806.25/162,789
6. Step 6: Final answer
   x = 763,913.61