Finding the Third Proportional to 348,687 and 538,798.50

Step by Step Solution

1. Step 1: Write the proportion equation
   348,687 : 538,798.50 = 538,798.50 : x
2. Step 2: Convert to fraction form
   348,687/538,798.50 = 538,798.50/x
3. Step 3: Cross multiply
   348,687x = 538,798.50 × 538,798.50
4. Step 4: Simplify right side
   348,687x = 290,303,823,602.25
5. Step 5: Solve for x
   x = 290,303,823,602.25/348,687
6. Step 6: Final answer
   x = 832,562.80