Finding the Third Proportional to 42,929 and 65,669.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,929 : 65,669.50 = 65,669.50 : x
2. Step 2: Convert to fraction form
   42,929/65,669.50 = 65,669.50/x
3. Step 3: Cross multiply
   42,929x = 65,669.50 × 65,669.50
4. Step 4: Simplify right side
   42,929x = 4,312,483,230.25
5. Step 5: Solve for x
   x = 4,312,483,230.25/42,929
6. Step 6: Final answer
   x = 100,456.18