Finding the Third Proportional to 899,221.50 and 1,311,106.50

Step by Step Solution

1. Step 1: Write the proportion equation
   899,221.50 : 1,311,106.50 = 1,311,106.50 : x
2. Step 2: Convert to fraction form
   899,221.50/1,311,106.50 = 1,311,106.50/x
3. Step 3: Cross multiply
   899,221.50x = 1,311,106.50 × 1,311,106.50
4. Step 4: Simplify right side
   899,221.50x = 1,719,000,254,342.25
5. Step 5: Solve for x
   x = 1,719,000,254,342.25/899,221.50
6. Step 6: Final answer
   x = 1,911,653.86