Finding the Third Proportional to 133,090.50 and 288,312

Step by Step Solution

1. Step 1: Write the proportion equation
   133,090.50 : 288,312 = 288,312 : x
2. Step 2: Convert to fraction form
   133,090.50/288,312 = 288,312/x
3. Step 3: Cross multiply
   133,090.50x = 288,312 × 288,312
4. Step 4: Simplify right side
   133,090.50x = 83,123,809,344
5. Step 5: Solve for x
   x = 83,123,809,344/133,090.50
6. Step 6: Final answer
   x = 624,566.06