Finding the Third Proportional to 133,123.50 and 289,572

Step by Step Solution

1. Step 1: Write the proportion equation
   133,123.50 : 289,572 = 289,572 : x
2. Step 2: Convert to fraction form
   133,123.50/289,572 = 289,572/x
3. Step 3: Cross multiply
   133,123.50x = 289,572 × 289,572
4. Step 4: Simplify right side
   133,123.50x = 83,851,943,184
5. Step 5: Solve for x
   x = 83,851,943,184/133,123.50
6. Step 6: Final answer
   x = 629,880.85