Finding the Third Proportional to 148,319 and 307,152.50

Step by Step Solution

1. Step 1: Write the proportion equation
   148,319 : 307,152.50 = 307,152.50 : x
2. Step 2: Convert to fraction form
   148,319/307,152.50 = 307,152.50/x
3. Step 3: Cross multiply
   148,319x = 307,152.50 × 307,152.50
4. Step 4: Simplify right side
   148,319x = 94,342,658,256.25
5. Step 5: Solve for x
   x = 94,342,658,256.25/148,319
6. Step 6: Final answer
   x = 636,079.38