Finding the Third Proportional to 249,123 and 385,924.50

Step by Step Solution

1. Step 1: Write the proportion equation
   249,123 : 385,924.50 = 385,924.50 : x
2. Step 2: Convert to fraction form
   249,123/385,924.50 = 385,924.50/x
3. Step 3: Cross multiply
   249,123x = 385,924.50 × 385,924.50
4. Step 4: Simplify right side
   249,123x = 148,937,719,700.25
5. Step 5: Solve for x
   x = 148,937,719,700.25/249,123
6. Step 6: Final answer
   x = 597,848.13