Finding the Third Proportional to 249,099 and 384,697.50

Step by Step Solution

1. Step 1: Write the proportion equation
   249,099 : 384,697.50 = 384,697.50 : x
2. Step 2: Convert to fraction form
   249,099/384,697.50 = 384,697.50/x
3. Step 3: Cross multiply
   249,099x = 384,697.50 × 384,697.50
4. Step 4: Simplify right side
   249,099x = 147,992,166,506.25
5. Step 5: Solve for x
   x = 147,992,166,506.25/249,099
6. Step 6: Final answer
   x = 594,109.84