Finding the Third Proportional to 2,978,687 and 4,602,828

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978,687 : 4,602,828 = 4,602,828 : x
2. Step 2: Convert to fraction form
   2,978,687/4,602,828 = 4,602,828/x
3. Step 3: Cross multiply
   2,978,687x = 4,602,828 × 4,602,828
4. Step 4: Simplify right side
   2,978,687x = 21,186,025,597,584
5. Step 5: Solve for x
   x = 21,186,025,597,584/2,978,687
6. Step 6: Final answer
   x = 7,112,538.38