Finding the Third Proportional to 816,216 and 1,731,240

Step by Step Solution

1. Step 1: Write the proportion equation
   816,216 : 1,731,240 = 1,731,240 : x
2. Step 2: Convert to fraction form
   816,216/1,731,240 = 1,731,240/x
3. Step 3: Cross multiply
   816,216x = 1,731,240 × 1,731,240
4. Step 4: Simplify right side
   816,216x = 2,997,191,937,600
5. Step 5: Solve for x
   x = 2,997,191,937,600/816,216
6. Step 6: Final answer
   x = 3,672,057.32