Finding the Third Proportional to 28,439,936 and 42,958,784

Step by Step Solution

1. Step 1: Write the proportion equation
   28,439,936 : 42,958,784 = 42,958,784 : x
2. Step 2: Convert to fraction form
   28,439,936/42,958,784 = 42,958,784/x
3. Step 3: Cross multiply
   28,439,936x = 42,958,784 × 42,958,784
4. Step 4: Simplify right side
   28,439,936x = 1,845,457,122,758,656
5. Step 5: Solve for x
   x = 1,845,457,122,758,656/28,439,936
6. Step 6: Final answer
   x = 64,889,636.98