Finding the Third Proportional to 1,618,656 and 3,545,688

Step by Step Solution

1. Step 1: Write the proportion equation
   1,618,656 : 3,545,688 = 3,545,688 : x
2. Step 2: Convert to fraction form
   1,618,656/3,545,688 = 3,545,688/x
3. Step 3: Cross multiply
   1,618,656x = 3,545,688 × 3,545,688
4. Step 4: Simplify right side
   1,618,656x = 12,571,903,393,344
5. Step 5: Solve for x
   x = 12,571,903,393,344/1,618,656
6. Step 6: Final answer
   x = 7,766,877.83