Finding the Third Proportional to 553,442 and 846,222

Step by Step Solution

1. Step 1: Write the proportion equation
   553,442 : 846,222 = 846,222 : x
2. Step 2: Convert to fraction form
   553,442/846,222 = 846,222/x
3. Step 3: Cross multiply
   553,442x = 846,222 × 846,222
4. Step 4: Simplify right side
   553,442x = 716,091,673,284
5. Step 5: Solve for x
   x = 716,091,673,284/553,442
6. Step 6: Final answer
   x = 1,293,887.48