Finding the Third Proportional to 1,272,659.50 and 1,780,196

Step by Step Solution

1. Step 1: Write the proportion equation
   1,272,659.50 : 1,780,196 = 1,780,196 : x
2. Step 2: Convert to fraction form
   1,272,659.50/1,780,196 = 1,780,196/x
3. Step 3: Cross multiply
   1,272,659.50x = 1,780,196 × 1,780,196
4. Step 4: Simplify right side
   1,272,659.50x = 3,169,097,798,416
5. Step 5: Solve for x
   x = 3,169,097,798,416/1,272,659.50
6. Step 6: Final answer
   x = 2,490,138.01