Finding the Third Proportional to 905,380 and 1,966,520

Step by Step Solution

1. Step 1: Write the proportion equation
   905,380 : 1,966,520 = 1,966,520 : x
2. Step 2: Convert to fraction form
   905,380/1,966,520 = 1,966,520/x
3. Step 3: Cross multiply
   905,380x = 1,966,520 × 1,966,520
4. Step 4: Simplify right side
   905,380x = 3,867,200,910,400
5. Step 5: Solve for x
   x = 3,867,200,910,400/905,380
6. Step 6: Final answer
   x = 4,271,356.68