Finding the Third Proportional to 1,689,020 and 3,715,840

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689,020 : 3,715,840 = 3,715,840 : x
2. Step 2: Convert to fraction form
   1,689,020/3,715,840 = 3,715,840/x
3. Step 3: Cross multiply
   1,689,020x = 3,715,840 × 3,715,840
4. Step 4: Simplify right side
   1,689,020x = 13,807,466,905,600
5. Step 5: Solve for x
   x = 13,807,466,905,600/1,689,020
6. Step 6: Final answer
   x = 8,174,839.20