Finding the Third Proportional to 139,159,019.25 and 274,805,444.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139,159,019.25 : 274,805,444.25 = 274,805,444.25 : x
2. Step 2: Convert to fraction form
   139,159,019.25/274,805,444.25 = 274,805,444.25/x
3. Step 3: Cross multiply
   139,159,019.25x = 274,805,444.25 × 274,805,444.25
4. Step 4: Simplify right side
   139,159,019.25x = 75,518,032,189,439,856
5. Step 5: Solve for x
   x = 75,518,032,189,439,856/139,159,019.25
6. Step 6: Final answer
   x = 542,674,363.45