Finding the Third Proportional to 615,312 and 1,335,600

Step by Step Solution

1. Step 1: Write the proportion equation
   615,312 : 1,335,600 = 1,335,600 : x
2. Step 2: Convert to fraction form
   615,312/1,335,600 = 1,335,600/x
3. Step 3: Cross multiply
   615,312x = 1,335,600 × 1,335,600
4. Step 4: Simplify right side
   615,312x = 1,783,827,360,000
5. Step 5: Solve for x
   x = 1,783,827,360,000/615,312
6. Step 6: Final answer
   x = 2,899,061.55