Finding the Third Proportional to 553,172 and 834,845.50

Step by Step Solution

1. Step 1: Write the proportion equation
   553,172 : 834,845.50 = 834,845.50 : x
2. Step 2: Convert to fraction form
   553,172/834,845.50 = 834,845.50/x
3. Step 3: Cross multiply
   553,172x = 834,845.50 × 834,845.50
4. Step 4: Simplify right side
   553,172x = 696,967,008,870.25
5. Step 5: Solve for x
   x = 696,967,008,870.25/553,172
6. Step 6: Final answer
   x = 1,259,946.29