Finding the Third Proportional to 90,420 and 183,300

Step by Step Solution

1. Step 1: Write the proportion equation
   90,420 : 183,300 = 183,300 : x
2. Step 2: Convert to fraction form
   90,420/183,300 = 183,300/x
3. Step 3: Cross multiply
   90,420x = 183,300 × 183,300
4. Step 4: Simplify right side
   90,420x = 33,598,890,000
5. Step 5: Solve for x
   x = 33,598,890,000/90,420
6. Step 6: Final answer
   x = 371,586.93