Finding the Third Proportional to 1,680,912 and 3,887,352

Step by Step Solution

1. Step 1: Write the proportion equation
   1,680,912 : 3,887,352 = 3,887,352 : x
2. Step 2: Convert to fraction form
   1,680,912/3,887,352 = 3,887,352/x
3. Step 3: Cross multiply
   1,680,912x = 3,887,352 × 3,887,352
4. Step 4: Simplify right side
   1,680,912x = 15,111,505,571,904
5. Step 5: Solve for x
   x = 15,111,505,571,904/1,680,912
6. Step 6: Final answer
   x = 8,990,063.47