Finding the Third Proportional to 30,216,436.50 and 64,740,435

Step by Step Solution

1. Step 1: Write the proportion equation
   30,216,436.50 : 64,740,435 = 64,740,435 : x
2. Step 2: Convert to fraction form
   30,216,436.50/64,740,435 = 64,740,435/x
3. Step 3: Cross multiply
   30,216,436.50x = 64,740,435 × 64,740,435
4. Step 4: Simplify right side
   30,216,436.50x = 4,191,323,923,989,225
5. Step 5: Solve for x
   x = 4,191,323,923,989,225/30,216,436.50
6. Step 6: Final answer
   x = 138,710,066.75