Finding the Third Proportional to 421,870.78 and 923,870.81

Step by Step Solution

1. Step 1: Write the proportion equation
   421,870.78 : 923,870.81 = 923,870.81 : x
2. Step 2: Convert to fraction form
   421,870.78/923,870.81 = 923,870.81/x
3. Step 3: Cross multiply
   421,870.78x = 923,870.81 × 923,870.81
4. Step 4: Simplify right side
   421,870.78x = 853,537,278,189.41
5. Step 5: Solve for x
   x = 853,537,278,189.41/421,870.78
6. Step 6: Final answer
   x = 2,023,219.71