Finding the Third Proportional to 786,978 and 1,685,576

Step by Step Solution

1. Step 1: Write the proportion equation
   786,978 : 1,685,576 = 1,685,576 : x
2. Step 2: Convert to fraction form
   786,978/1,685,576 = 1,685,576/x
3. Step 3: Cross multiply
   786,978x = 1,685,576 × 1,685,576
4. Step 4: Simplify right side
   786,978x = 2,841,166,451,776
5. Step 5: Solve for x
   x = 2,841,166,451,776/786,978
6. Step 6: Final answer
   x = 3,610,223.48