Finding the Third Proportional to 604,410 and 821,338.50

Step by Step Solution

1. Step 1: Write the proportion equation
   604,410 : 821,338.50 = 821,338.50 : x
2. Step 2: Convert to fraction form
   604,410/821,338.50 = 821,338.50/x
3. Step 3: Cross multiply
   604,410x = 821,338.50 × 821,338.50
4. Step 4: Simplify right side
   604,410x = 674,596,931,582.25
5. Step 5: Solve for x
   x = 674,596,931,582.25/604,410
6. Step 6: Final answer
   x = 1,116,124.70