Finding the Third Proportional to 2,147,177 and 4,680,178

Step by Step Solution

1. Step 1: Write the proportion equation
   2,147,177 : 4,680,178 = 4,680,178 : x
2. Step 2: Convert to fraction form
   2,147,177/4,680,178 = 4,680,178/x
3. Step 3: Cross multiply
   2,147,177x = 4,680,178 × 4,680,178
4. Step 4: Simplify right side
   2,147,177x = 21,904,066,111,684
5. Step 5: Solve for x
   x = 21,904,066,111,684/2,147,177
6. Step 6: Final answer
   x = 10,201,332.31