Finding the Third Proportional to 333,715.50 and 691,088

Step by Step Solution

1. Step 1: Write the proportion equation
   333,715.50 : 691,088 = 691,088 : x
2. Step 2: Convert to fraction form
   333,715.50/691,088 = 691,088/x
3. Step 3: Cross multiply
   333,715.50x = 691,088 × 691,088
4. Step 4: Simplify right side
   333,715.50x = 477,602,623,744
5. Step 5: Solve for x
   x = 477,602,623,744/333,715.50
6. Step 6: Final answer
   x = 1,431,167.04