Finding the Third Proportional to 368,743.50 and 556,483.50

Step by Step Solution

1. Step 1: Write the proportion equation
   368,743.50 : 556,483.50 = 556,483.50 : x
2. Step 2: Convert to fraction form
   368,743.50/556,483.50 = 556,483.50/x
3. Step 3: Cross multiply
   368,743.50x = 556,483.50 × 556,483.50
4. Step 4: Simplify right side
   368,743.50x = 309,673,885,772.25
5. Step 5: Solve for x
   x = 309,673,885,772.25/368,743.50
6. Step 6: Final answer
   x = 839,808.39