Finding the Third Proportional to 421,336.69 and 921,499.03

Step by Step Solution

1. Step 1: Write the proportion equation
   421,336.69 : 921,499.03 = 921,499.03 : x
2. Step 2: Convert to fraction form
   421,336.69/921,499.03 = 921,499.03/x
3. Step 3: Cross multiply
   421,336.69x = 921,499.03 × 921,499.03
4. Step 4: Simplify right side
   421,336.69x = 849,160,464,594.69
5. Step 5: Solve for x
   x = 849,160,464,594.69/421,336.69
6. Step 6: Final answer
   x = 2,015,396.45