Finding the Third Proportional to 133,060 and 287,443

Step by Step Solution

1. Step 1: Write the proportion equation
   133,060 : 287,443 = 287,443 : x
2. Step 2: Convert to fraction form
   133,060/287,443 = 287,443/x
3. Step 3: Cross multiply
   133,060x = 287,443 × 287,443
4. Step 4: Simplify right side
   133,060x = 82,623,478,249
5. Step 5: Solve for x
   x = 82,623,478,249/133,060
6. Step 6: Final answer
   x = 620,949.03