Finding the Third Proportional to 784,978 and 1,243,611

Step by Step Solution

1. Step 1: Write the proportion equation
   784,978 : 1,243,611 = 1,243,611 : x
2. Step 2: Convert to fraction form
   784,978/1,243,611 = 1,243,611/x
3. Step 3: Cross multiply
   784,978x = 1,243,611 × 1,243,611
4. Step 4: Simplify right side
   784,978x = 1,546,568,319,321
5. Step 5: Solve for x
   x = 1,546,568,319,321/784,978
6. Step 6: Final answer
   x = 1,970,205.94