Finding the Third Proportional to 249,648.75 and 405,594

Step by Step Solution

1. Step 1: Write the proportion equation
   249,648.75 : 405,594 = 405,594 : x
2. Step 2: Convert to fraction form
   249,648.75/405,594 = 405,594/x
3. Step 3: Cross multiply
   249,648.75x = 405,594 × 405,594
4. Step 4: Simplify right side
   249,648.75x = 164,506,492,836
5. Step 5: Solve for x
   x = 164,506,492,836/249,648.75
6. Step 6: Final answer
   x = 658,951.80