Finding the Third Proportional to 367,386 and 556,615.50

Step by Step Solution

1. Step 1: Write the proportion equation
   367,386 : 556,615.50 = 556,615.50 : x
2. Step 2: Convert to fraction form
   367,386/556,615.50 = 556,615.50/x
3. Step 3: Cross multiply
   367,386x = 556,615.50 × 556,615.50
4. Step 4: Simplify right side
   367,386x = 309,820,814,840.25
5. Step 5: Solve for x
   x = 309,820,814,840.25/367,386
6. Step 6: Final answer
   x = 843,311.43