Finding the Third Proportional to 421,969.50 and 904,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   421,969.50 : 904,216.50 = 904,216.50 : x
2. Step 2: Convert to fraction form
   421,969.50/904,216.50 = 904,216.50/x
3. Step 3: Cross multiply
   421,969.50x = 904,216.50 × 904,216.50
4. Step 4: Simplify right side
   421,969.50x = 817,607,478,872.25
5. Step 5: Solve for x
   x = 817,607,478,872.25/421,969.50
6. Step 6: Final answer
   x = 1,937,598.52