Finding the Third Proportional to 1,618,632 and 3,545,640

Step by Step Solution

1. Step 1: Write the proportion equation
   1,618,632 : 3,545,640 = 3,545,640 : x
2. Step 2: Convert to fraction form
   1,618,632/3,545,640 = 3,545,640/x
3. Step 3: Cross multiply
   1,618,632x = 3,545,640 × 3,545,640
4. Step 4: Simplify right side
   1,618,632x = 12,571,563,009,600
5. Step 5: Solve for x
   x = 12,571,563,009,600/1,618,632
6. Step 6: Final answer
   x = 7,766,782.70