Finding the Third Proportional to 139,159,020 and 274,805,445

Step by Step Solution

1. Step 1: Write the proportion equation
   139,159,020 : 274,805,445 = 274,805,445 : x
2. Step 2: Convert to fraction form
   139,159,020/274,805,445 = 274,805,445/x
3. Step 3: Cross multiply
   139,159,020x = 274,805,445 × 274,805,445
4. Step 4: Simplify right side
   139,159,020x = 75,518,032,601,648,032
5. Step 5: Solve for x
   x = 75,518,032,601,648,032/139,159,020
6. Step 6: Final answer
   x = 542,674,363.48