Finding the Third Proportional to 219,078 and 478,705.50

Step by Step Solution

1. Step 1: Write the proportion equation
   219,078 : 478,705.50 = 478,705.50 : x
2. Step 2: Convert to fraction form
   219,078/478,705.50 = 478,705.50/x
3. Step 3: Cross multiply
   219,078x = 478,705.50 × 478,705.50
4. Step 4: Simplify right side
   219,078x = 229,158,955,730.25
5. Step 5: Solve for x
   x = 229,158,955,730.25/219,078
6. Step 6: Final answer
   x = 1,046,015.37