Finding the Third Proportional to 878,025 and 1,780,272

Step by Step Solution

1. Step 1: Write the proportion equation
   878,025 : 1,780,272 = 1,780,272 : x
2. Step 2: Convert to fraction form
   878,025/1,780,272 = 1,780,272/x
3. Step 3: Cross multiply
   878,025x = 1,780,272 × 1,780,272
4. Step 4: Simplify right side
   878,025x = 3,169,368,393,984
5. Step 5: Solve for x
   x = 3,169,368,393,984/878,025
6. Step 6: Final answer
   x = 3,609,656.21