Finding the Third Proportional to 377,370 and 821,173.50

Step by Step Solution

1. Step 1: Write the proportion equation
   377,370 : 821,173.50 = 821,173.50 : x
2. Step 2: Convert to fraction form
   377,370/821,173.50 = 821,173.50/x
3. Step 3: Cross multiply
   377,370x = 821,173.50 × 821,173.50
4. Step 4: Simplify right side
   377,370x = 674,325,917,102.25
5. Step 5: Solve for x
   x = 674,325,917,102.25/377,370
6. Step 6: Final answer
   x = 1,786,909.18