Finding the Third Proportional to 191,718 and 403,261.88

Step by Step Solution

1. Step 1: Write the proportion equation
   191,718 : 403,261.88 = 403,261.88 : x
2. Step 2: Convert to fraction form
   191,718/403,261.88 = 403,261.88/x
3. Step 3: Cross multiply
   191,718x = 403,261.88 × 403,261.88
4. Step 4: Simplify right side
   191,718x = 162,620,139,828.52
5. Step 5: Solve for x
   x = 162,620,139,828.52/191,718
6. Step 6: Final answer
   x = 848,225.73