Finding the Third Proportional to 59,513,467.50 and 128,958,375

Step by Step Solution

1. Step 1: Write the proportion equation
   59,513,467.50 : 128,958,375 = 128,958,375 : x
2. Step 2: Convert to fraction form
   59,513,467.50/128,958,375 = 128,958,375/x
3. Step 3: Cross multiply
   59,513,467.50x = 128,958,375 × 128,958,375
4. Step 4: Simplify right side
   59,513,467.50x = 16,630,262,482,640,624
5. Step 5: Solve for x
   x = 16,630,262,482,640,624/59,513,467.50
6. Step 6: Final answer
   x = 279,436,960.76