Finding the Third Proportional to 788,713 and 1,220,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   788,713 : 1,220,109.50 = 1,220,109.50 : x
2. Step 2: Convert to fraction form
   788,713/1,220,109.50 = 1,220,109.50/x
3. Step 3: Cross multiply
   788,713x = 1,220,109.50 × 1,220,109.50
4. Step 4: Simplify right side
   788,713x = 1,488,667,191,990.25
5. Step 5: Solve for x
   x = 1,488,667,191,990.25/788,713
6. Step 6: Final answer
   x = 1,887,463.74