Finding the Third Proportional to 431,799 and 913,420.50

Step by Step Solution

1. Step 1: Write the proportion equation
   431,799 : 913,420.50 = 913,420.50 : x
2. Step 2: Convert to fraction form
   431,799/913,420.50 = 913,420.50/x
3. Step 3: Cross multiply
   431,799x = 913,420.50 × 913,420.50
4. Step 4: Simplify right side
   431,799x = 834,337,009,820.25
5. Step 5: Solve for x
   x = 834,337,009,820.25/431,799
6. Step 6: Final answer
   x = 1,932,234.70