Finding the Third Proportional to 5,406,735 and 7,558,978.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,406,735 : 7,558,978.50 = 7,558,978.50 : x
2. Step 2: Convert to fraction form
   5,406,735/7,558,978.50 = 7,558,978.50/x
3. Step 3: Cross multiply
   5,406,735x = 7,558,978.50 × 7,558,978.50
4. Step 4: Simplify right side
   5,406,735x = 57,138,155,963,462.25
5. Step 5: Solve for x
   x = 57,138,155,963,462.25/5,406,735
6. Step 6: Final answer
   x = 10,567,959.40