Finding the Third Proportional to 421,969.50 and 904,215

Step by Step Solution

1. Step 1: Write the proportion equation
   421,969.50 : 904,215 = 904,215 : x
2. Step 2: Convert to fraction form
   421,969.50/904,215 = 904,215/x
3. Step 3: Cross multiply
   421,969.50x = 904,215 × 904,215
4. Step 4: Simplify right side
   421,969.50x = 817,604,766,225
5. Step 5: Solve for x
   x = 817,604,766,225/421,969.50
6. Step 6: Final answer
   x = 1,937,592.09