Finding the Third Proportional to 379,666 and 802,021.50

Step by Step Solution

1. Step 1: Write the proportion equation
   379,666 : 802,021.50 = 802,021.50 : x
2. Step 2: Convert to fraction form
   379,666/802,021.50 = 802,021.50/x
3. Step 3: Cross multiply
   379,666x = 802,021.50 × 802,021.50
4. Step 4: Simplify right side
   379,666x = 643,238,486,462.25
5. Step 5: Solve for x
   x = 643,238,486,462.25/379,666
6. Step 6: Final answer
   x = 1,694,221.99