Finding the Third Proportional to 153,060 and 205,290

Step by Step Solution

1. Step 1: Write the proportion equation
   153,060 : 205,290 = 205,290 : x
2. Step 2: Convert to fraction form
   153,060/205,290 = 205,290/x
3. Step 3: Cross multiply
   153,060x = 205,290 × 205,290
4. Step 4: Simplify right side
   153,060x = 42,143,984,100
5. Step 5: Solve for x
   x = 42,143,984,100/153,060
6. Step 6: Final answer
   x = 275,342.90