Finding the Third Proportional to 149,850 and 320,954.91

Step by Step Solution

1. Step 1: Write the proportion equation
   149,850 : 320,954.91 = 320,954.91 : x
2. Step 2: Convert to fraction form
   149,850/320,954.91 = 320,954.91/x
3. Step 3: Cross multiply
   149,850x = 320,954.91 × 320,954.91
4. Step 4: Simplify right side
   149,850x = 103,012,051,845.95
5. Step 5: Solve for x
   x = 103,012,051,845.95/149,850
6. Step 6: Final answer
   x = 687,434.45