Finding the Third Proportional to 285,064.50 and 619,746

Step by Step Solution

1. Step 1: Write the proportion equation
   285,064.50 : 619,746 = 619,746 : x
2. Step 2: Convert to fraction form
   285,064.50/619,746 = 619,746/x
3. Step 3: Cross multiply
   285,064.50x = 619,746 × 619,746
4. Step 4: Simplify right side
   285,064.50x = 384,085,104,516
5. Step 5: Solve for x
   x = 384,085,104,516/285,064.50
6. Step 6: Final answer
   x = 1,347,362.10