Finding the Third Proportional to 1,708,740 and 3,638,340

Step by Step Solution

1. Step 1: Write the proportion equation
   1,708,740 : 3,638,340 = 3,638,340 : x
2. Step 2: Convert to fraction form
   1,708,740/3,638,340 = 3,638,340/x
3. Step 3: Cross multiply
   1,708,740x = 3,638,340 × 3,638,340
4. Step 4: Simplify right side
   1,708,740x = 13,237,517,955,600
5. Step 5: Solve for x
   x = 13,237,517,955,600/1,708,740
6. Step 6: Final answer
   x = 7,746,946.85