Finding the Third Proportional to 42,121,626 and 64,715,223

Step by Step Solution

1. Step 1: Write the proportion equation
   42,121,626 : 64,715,223 = 64,715,223 : x
2. Step 2: Convert to fraction form
   42,121,626/64,715,223 = 64,715,223/x
3. Step 3: Cross multiply
   42,121,626x = 64,715,223 × 64,715,223
4. Step 4: Simplify right side
   42,121,626x = 4,188,060,087,939,729
5. Step 5: Solve for x
   x = 4,188,060,087,939,729/42,121,626
6. Step 6: Final answer
   x = 99,427,787.71