Finding the Third Proportional to 521,802 and 807,354

Step by Step Solution

1. Step 1: Write the proportion equation
   521,802 : 807,354 = 807,354 : x
2. Step 2: Convert to fraction form
   521,802/807,354 = 807,354/x
3. Step 3: Cross multiply
   521,802x = 807,354 × 807,354
4. Step 4: Simplify right side
   521,802x = 651,820,481,316
5. Step 5: Solve for x
   x = 651,820,481,316/521,802
6. Step 6: Final answer
   x = 1,249,172.06