Finding the Third Proportional to 1,823,559 and 4,221,213

Step by Step Solution

1. Step 1: Write the proportion equation
   1,823,559 : 4,221,213 = 4,221,213 : x
2. Step 2: Convert to fraction form
   1,823,559/4,221,213 = 4,221,213/x
3. Step 3: Cross multiply
   1,823,559x = 4,221,213 × 4,221,213
4. Step 4: Simplify right side
   1,823,559x = 17,818,639,191,369
5. Step 5: Solve for x
   x = 17,818,639,191,369/1,823,559
6. Step 6: Final answer
   x = 9,771,353.27