Finding the Third Proportional to 139,154 and 297,985

Step by Step Solution

1. Step 1: Write the proportion equation
   139,154 : 297,985 = 297,985 : x
2. Step 2: Convert to fraction form
   139,154/297,985 = 297,985/x
3. Step 3: Cross multiply
   139,154x = 297,985 × 297,985
4. Step 4: Simplify right side
   139,154x = 88,795,060,225
5. Step 5: Solve for x
   x = 88,795,060,225/139,154
6. Step 6: Final answer
   x = 638,106.42