Finding the Third Proportional to 1,217,256 and 1,899,580.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,217,256 : 1,899,580.50 = 1,899,580.50 : x
2. Step 2: Convert to fraction form
   1,217,256/1,899,580.50 = 1,899,580.50/x
3. Step 3: Cross multiply
   1,217,256x = 1,899,580.50 × 1,899,580.50
4. Step 4: Simplify right side
   1,217,256x = 3,608,406,075,980.25
5. Step 5: Solve for x
   x = 3,608,406,075,980.25/1,217,256
6. Step 6: Final answer
   x = 2,964,377.32