Finding the Third Proportional to 139,146 and 297,967.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,146 : 297,967.50 = 297,967.50 : x
2. Step 2: Convert to fraction form
   139,146/297,967.50 = 297,967.50/x
3. Step 3: Cross multiply
   139,146x = 297,967.50 × 297,967.50
4. Step 4: Simplify right side
   139,146x = 88,784,631,056.25
5. Step 5: Solve for x
   x = 88,784,631,056.25/139,146
6. Step 6: Final answer
   x = 638,068.15