Finding the Third Proportional to 249,789 and 380,941.50

Step by Step Solution

1. Step 1: Write the proportion equation
   249,789 : 380,941.50 = 380,941.50 : x
2. Step 2: Convert to fraction form
   249,789/380,941.50 = 380,941.50/x
3. Step 3: Cross multiply
   249,789x = 380,941.50 × 380,941.50
4. Step 4: Simplify right side
   249,789x = 145,116,426,422.25
5. Step 5: Solve for x
   x = 145,116,426,422.25/249,789
6. Step 6: Final answer
   x = 580,956.03