Finding the Third Proportional to 611,364 and 1,438,513

Step by Step Solution

1. Step 1: Write the proportion equation
   611,364 : 1,438,513 = 1,438,513 : x
2. Step 2: Convert to fraction form
   611,364/1,438,513 = 1,438,513/x
3. Step 3: Cross multiply
   611,364x = 1,438,513 × 1,438,513
4. Step 4: Simplify right side
   611,364x = 2,069,319,651,169
5. Step 5: Solve for x
   x = 2,069,319,651,169/611,364
6. Step 6: Final answer
   x = 3,384,758.75