Finding the Third Proportional to 521,691 and 1,099,417.50

Step by Step Solution

1. Step 1: Write the proportion equation
   521,691 : 1,099,417.50 = 1,099,417.50 : x
2. Step 2: Convert to fraction form
   521,691/1,099,417.50 = 1,099,417.50/x
3. Step 3: Cross multiply
   521,691x = 1,099,417.50 × 1,099,417.50
4. Step 4: Simplify right side
   521,691x = 1,208,718,839,306.25
5. Step 5: Solve for x
   x = 1,208,718,839,306.25/521,691
6. Step 6: Final answer
   x = 2,316,924.84